Combined type-writing and computing machine.



J F. ALLARD. I

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED JULY I, 1911.

Patented Apr. 4, 1916.

4 SHEETS-SHEET 1. 100

THE COLUMBIA PLANOGRAPH c0., WASHINGTON, n. c.

fliia nef J F.. ALLARD.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED JULY 1, m1.

Patented Apr. 4, 1916.

4 SHEETS-SHEET 2 THE COLUMBIA PLANOGRAPH c0., WASHINGTON, D. c.

J F. ALLARD.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

'APPLICATION FILED JULY 1. 1911.

4 SHEETSSHEET a.

Patented Apr. 4

[Merl/Z07.-

rm! CDLUMIIA PLANOORAPH ,c0., WASHINGTON, n. c.

Patented Apr. 4, 1916.

4 SHEETS-SHEET 4 [man/Z07: $1M W J J F.-ALLARD. COMBINED TYPE WRITINGAND COMPUTING MACHINE.

w m w M H M m A 8 0O 8 7 1 1 THE COLUMBIA PMNDGRAPH co., WASHINGTON, D.C.

UNITED STATES PATENT OFFICE.

J FRANK ALLARD, OF BROOKLYN, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS,TO

- UNDERWOOD COMPUTING MACHINE COMPANY, ,OFfNEW YORK, N. Y., A CORPORA-TION OF NEW YORK.

COMBINED TYPE-WRITING AND COMPUTING MACHINE 'Spe cificationof LettersPatent.

Patented Apr. 4, 1916.

Application filed July 1, 1911. Serial No. 636,405.

To all whom it may concern. I

Be it known that I, J FRANK A LARD, a citizen of the United States,residing in Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements in Combined Type-lVritingand Computing Machines, of whichthe following is a specification. f Thisinvention relates generally to that class of combined typewriting andadding machines in which computing devices are set up by the numeralkeys of the typewriter, and subsequently rotation is effected of thecomputing wheels, each to an extent determinedby the setting of thecomputing devices by the numeral keys. The carriage of the typewriter isconnected to the computing mechanism in a manner to determine thedenomination of the computing device which is set by any key. A machineof this general description is illustrated in application No. 466,836,filed December 10,1908.

One of the principal objects of the present invention is to providesimple and efficient means for causing the general computing operator tobe actuated automatically. To this end, I provide an electric motor orprime mover, which. is included in a normally open circuit, and hence isnormally silent; but upon a certain movement of the carriage of thetypewriter the circuit is closed, and the motor rotatesor moves, and thegeneral operator is reciprocated. This circuit-closing movement of thecarriage preferably occurs at the time that a digit is written in theunits place in the column on the work sheet; but it will be understoodthat so far as certain features of my invention are concerned, thecircuit may be closed by other movements of said carriage. It will alsobe understood that the circuit may be closed by other means inconnection with the depression of a numeral key to compute at the unitsplace in a computation. The general operator is of a re ciprocatingtype,and a rotatable member is connected. thereto by a cranl", s0 thatone rotation of the member will effect a com-' plete reciprocation ofthe general operator.

Upon the carriage of the typewriter, there is mounted a wiper, cam ortappet, which, at each step of the carriage, whenever computation isbegun, operates one of a set of jacks, whereby is determinedthedenomination of the computing device to be set by the next depressionof a typewriter key.

This cam or tappet is caused also, according to the presentimprovements, tofoperate a supernumerary ack, which in turn closes saidmotor circuit, so that when the carriage advances (upon the release ofthe type key employed to write a digit in the units place) saidsupernumerary jack effects the closing the result of all the numbersthat are written during the run of the carriage may be shown upon thecomputing wheels.

In the accompanying drawings, Figure l is a perspective rear view of theprincipal members of the improved mechanism for controlling the generaloperator, the parts being shown'in normal positions, both circuits beingopen. Fig. 2 is a part sectional side elevation of a combinedtypewriting and computing machine of the Underwood- I-Ianson type,embodying the present improvei'nents. Fig. 3 is a diagram of theelectrical circuits. Fig. 4 is a sectional side elevation of themotor-gearing and its con nections. Fig. 5 is a plan of the principaldevices seen at Fig. 4. In this figure, the general operator-is atthefinal end of its stroke. Fig. 6 is a sectional side elevation of adetail of the means whereby any special finger-key may close the motorcircuit, to cause the actuation of the general operator. Fig. 7 isasfectional front elevation of the invention. Fig. 8 shows a shiftablefulcrum for a special'jack; Fig. 9 is a front to throw type bars 5upwardly and rearwardly to strike upon the front side of a platen 6,which is mounted to travel upon a letter-feeding carriage 7. The saidcarriage is driven in the usual manner by a spring 8, and is controlledby letter-feeding devices, these devices comprising a universal bar 9,actuated by heels on the type-bars and forming part of a frame 11, saidframe having vibrating supports 12 and actuating the usualletter-feeding dogs 12 which control escapement wheel 12*. Upon saidcarriage is a tappet 13, which is usually adjustable along the rack bar14, and has a cam edge to lift in succession jacks 15 arranged in a rowmounted upon a fulcrum 16. The rear ends of the jacks press down links18 to vibrate levers 19, which are connected to linkages 20 to lift therear ends of a series of bars 21, whose forward ends carry racks 22 tomesh with pinions 23 provided upon dial wheels 24, whereby the lattermay be rotated. The numeral keys 1 have stems 25 to operate arms 26 uponlinkages 27 to depress any of a set of pins 28 upon the elevated rackbar. As the carriage 7 feeds step-by-step, the rack bars 21 are elevatedin succession, and clownwardly from each one is projected a pin 28. Therack bars fall to normal positions, thus bringing the depressed pinsinto the path of a cross bar 29 forming part of a general operator. Thegeneral operator, which also comprises pairof arms 30 and a pair ofracks 31 on opposite sides of the machine, is connected by pinions 32and segments 33 to a shaft 34. The general operator is slid forwardly,by 'IllBflIlS presently to be described, the bar 29 engaging all of thedepressed pins and driving forward the racks 22 corresponding distances,to turn the dial wheels 24 accordingly.

Upon striking a key 1 to print a. digit in the units place in thecolumn, and then releasingsaid key, the carriage 7 advances one, step,and the tappet 13 engages the nose 162 of a special jack 36 placed atthe end of the row of jacks and having a link 37 to engage arm 38forming part of a bell crank, the other, arm 39 of which carries a rodor link 40 (supported by an idle link 41), and at its, forward end has apin 42 to engage and press forwardlyan car 43 provided upon a switch bar44, the latter pivoted at 45 upon a fixed plate 46 of insulatingmaterial, and being adapted to close a circuit through an electricalmotor 47, which is connected to the following means for recip-. rocatingthe racks 31 and arms 30 to operate the dial wheels 24. The shaft '48 ofsaid motor has a worm 49, Fig. 4, meshing with a. worm wheel 50 upon ashaft 51, and is intended to give said shaft a single completerevolution more or less, at each cycle of operations, Upon saidshaft5lis. car

ried, Fig. 2, a crank 52, having at its end a swiveled block 53 slidingin a guide groove 54 on a head 55, the latter being fixed upon a rod 56,which slides forwardly and backwardly in guides 57, 58. The upperend ofthe head 55 is fitted in a yoke 59, secured upon one of the racks 31 ofthe general operator; and a single revolution of said shaft 51 causes acomplete reciprocation of the head 55, the. yoke 59 and the generaloperator (comprising the members 31, 30, 29, etc.) When, therefore, adigit has been printed in the units place in a column of writing, andthe carriage has consequently been fed past said units place, and thespecial jack 36 has hence been operated, the circuit is closed throughsaid motor 47, and the general operator is reciprocated. Said switch 44has an arm 60, carrying a binding post 61 for one conductor 62 of themotor circuit, Fig. 3. The other wire 63 of said circuit is attached toa post 64 carried by a plate 64, fixed upon the insulating plate 46 inthe path of the switch 44 to be engagcd thereby, to close the motorcircuit;

.astop 65 beingprovidcd for the switch 44.

, During the forward or inner stroke of the head 55 which actuates saidgeneral op erator of the computing mechanism, there is a swingingmovement of a lever 66, whichis pivoted at 67 upon said insulating plate46, and has an arm 68 which presses against an arm. 69 projecting fromthe head 55, and hence follows said arm for a certain distance when thehead 55 moves; this movementof the lever 66 being effected by adraw-spring 70, which is connected to an arm 71 of a bell crank pivotedat 72 upon said plate 46, and having an arm 73 to engage an end of thelever 66 to turn the same. By means of this spring, the parts 66, 71 are(at the initial stroke of head 55) swung to the position at Fig. 5. Itwill be noticed that the arm 71 consists of two members pivoted togetherat 74', the spring being connected to the member 7 5; a stop 76 limitingthe ielative movement of the arms, and a stop 77 arresting the bellcrank 71, 73. The described movement of the parts 66 and 71, from thenormal position at Fig. 1 to the abnormal position at Fig. 7, is idle;but during the latter part of the return stroke of the general operatorand of the reciprocating head 55, the arm 69 of the latter engages thearm 68 of lever 66, and by means of said lever swings the bell crank 73,71 against the tension of spring 70; a tip 78 of insulating material,secured upon the end of the jointed arm 75, engaging an inclined ordiagonal edge or cam 79 on said switch 44, and thereby forcing saidswitch to swing away from the contact plate 64, to break the motorcircuit, so that the motor may come to rest when the function ofthegeneral operator. has been performed. The

good contact, the bar 141 being of slightly yielding construction, andbeing held frictionally upon said contact portion 6 1".

It will be understood that during the movement of the jointedswitch-opener 71, 75, before described, effected by spring 70, the tip78 at first abuts against the end or shoulder of cam 79, but that thejoint 7 1 permits the spring 70 to complete the return movement of thebell crank 71, 73, and that said tip 78 finally trips off from theshoulder, resuming its proper relation to the arm 71, as at Fig. 5. Thisbreaking of the motor circuit occurs when the head 55, whichreciprocates the general operator, has nearly completed its cycle ofmovements; the completion of said cycle being effected by the motor -17,which may run by momentum. In order. to prevent over-running of themotor, a brake 80 is provided, in the form of a lever fulcrumed at 81upon a fixed bracket 82, and having a shoe 83 of leather or fibrousmaterial to run upon a facing 81 of like material, provided upon a wheel85 fixed upon the shaft 18 of the motor.v This brake is operatedautomatically by means of a solenoid 86. The circuit of the solenoid 86is normally open,but is closed by that movement of the switch bar 44which is effected through the parts 69, 66, 71, etc. One conductor orside 87 of the solenoid circuit is attached at 88 to an ear 89 on saidswitch bar 4A; and the other side of said solenoid circuit (which mayinclude a resistance coil 90),terminates at a contact 91 fixed upon theplate or base 416, and of inclined or beveled shape, so that theflexible bar 4-1 may be forced up the bevel (91 and be held frictionallythereby. Thus, at the time that the motor circuit is open, the solenoidcircuit is closed, so that the brake is instantly applied, and the motorcomes almost instantly to rest, so that there is little or no over-throwof the shaft 51 driven by said motor and serving to reciprocate the head55 connected to the general operator.

The solenoid circuit is automatically opened by means of a cam 92secured upon the core 93 of the solenoid, said cam, at the final portionof an inward stroke of said core 93, engaging said ear or finger 43 onthe switch bar 141, and moving the same forwardly to disconnect it fromthe contact 91,

although not sufliciently far to connect it to the contact 641 A detent9 1 having a pointed tooth or cam-shaped portion 96 is pressed by aspring 95 to engage said portion 96 in a depression or perforation 97 inthe switch bar 4.4, to complete the stroke of the latter to normalposition, and hold it having a member 108, which, by. means or yieldwhile substantial pressure is effected of the brake against the brakewheel Sl; this yielding movement being utilized for the purpose ofenabling the cam 92 to move the ear 13 sufiiciently to disconnect theswitch 41 from the contact 91, or at least to put said switch 14: underthe control of cam 96, which will complete the return of the switch tonormal position.

A key 100 at the keyboard is provided with a stem 101, pivoted 102 tothe for ward end of a lever 103, which bears down The solenoid upon afinger 104 provided upon an arm 105 (Fig. 6) pivoted at 106 to a fixture107 and the key 100, is forced to swing down. and vibrate the switch bar41 1-, to bring the op posite end thereof into engagement with thecontact 6 1*; a spring 109 returning the members 105, 103 and 100 tonormal positions; so that at any time, by merely touching the key 100,the operative can cause a movement of the general operator of thecomputing mechanism.

As will be seen at Fig. 9, the nose 162 of the ack 36 is made very thin,and the tappet 13 is of such form that the jack 36' will be operated(Fig. 10) and released (Fig. 9) by the time the paper carriage 7completes its first letter-feeding movement after the writing of a digitin the units place. The projecting pin 4'2 is accordingly withdrawn fromthe arm 43 of the switch lever prior to the completion of the operationof the general operator, so that a second operation of the latter doesnot occur.

By turning a button 163, the special jack 36 can be moved to a positionto silence or disable the denomination selecting mechanism. This buttonis mounted upon the outer end of a stub shaft 164: which is eccentric tothe shaft 16 that carries the jacks normally is concentric with theshaft 16, i V

and which, by rotatiou'of the button 163 through half a revolution, islifted above the shaft 16, so that the nose 162 of the special jack 36is raised too high to be engaged by the tappet 13. To hold the stubshaft 164C where adjusted, a spring 167 presses a ball 168 into a seat169, Fig. 8, formed in the stub shaft, said spring being held down by ascrew. The stub shaft may have depressions on its opposite sides, andthese depressions may be connected by a shallow peripheral groove 171. R

In the application of Frederick A. Hart, No. 607,925, filed February 11,1911. is disclosed a vconstantly-rotating electrical motor and meansdependent upon the movement of the carriage at the units place forconnecting said motor to the general operator; but I do not claim hereinany feature of invention disclosed in said application.

Variations may be resorted to within the scope of he invention, andportions of the improvements may be used without others.

Having thus described my invention, 1 claim:

1. In a combined typewriting and computing machine, comprising acarriage, numeral keys, indexing devices set thereby, a letter-feedingmechanism for said carriage, said feeding mechanism controlled by saidkeys, dial wheels or members, and a general operator for advancing saidwheels to points determined by the set indexing devices, the combinationof a normally stationary electrical prime mover for actuating saidgeneral operator, said prime mover included in a circuit, meanspositively controlled by saic general operator for opening said circuit,means dependent upon the letter feeding movement of the typewritercarriage for closing said circuit, and means independent of saidcarriage for holding the circuit closed.

2. In a combined typewriting and computing machine, comprising acarriage,

numeral keys, indexing devices set thereby,

a letter-feeding mechanism for said carriage, sald feeding mechanismcontrolled by said keys, dial wheels or members, and a general operatorfor advancing said wheels to points determined by the set indexingdevices, the combination of a normally stationary electrical prime moverfor actuating said general operator. said prime mover included in acircuit, a switch in said circuit, means dependent upon the letterfeeding movement of the typewriter carriage for closing said switch, anda switchopener operable by said general operator.

In a combined typewriting and computing machine, comprising a carriage,numeral keys, indexing devices set thereby, a letter-feeding mechanismfor said carriage, said feeding mechanism controlled by said keys, dialwheels or members, and a general operator for advancing said wheels topoints determined by the set indexing devices, the combination of anormally stationary electrical prime mover for actuating said generaloperator, said prime mover included in a circuit, a switch in saidcircuit, means dependent upon the movement of the typewriter carriagefor closing said switch, a switch-opener operable by said generaloperator, and a yielding construction to permit return movement of saidswitch opener independently of said switch.

I. In a combined typewritingand computing machine, comprising acarriage, numel'al keys, indexing devices set thereby, a

letter-feeding mechanism for said carriage,

vsaid feeding mechanism controlled by said vices, the combination of anormally stationary electrical prime mover for actuating said generaloperator, said prime mover included in a circuit, a switch in saidcircuit, means dependent upon the movement of the typewriter carriagefor closing said switch, a switch-opener operable by said generaloperator, and a spring for returning said switch-opener at the nextinitial stroke of the general operator; said switch-opener having ayieldable construction to permit such return movement independently ofsaid switch.

5. In a combined typewriting and co1nputing machine, comprising numeralkeys and indexing devices set thereby, dial wheels, a general operatorfor turning said wheels concomitantly to points determined by the setindexing devices, and a letterfeeding carriage, the combination with anelectrical motor or prime mover connected to said general operator andincluded in an open circuit, of means dependent upon the movement of thetypewriter carriage for closing said circuit, a brake for said motor,and means dependent upon the movement of said general operator foropening said circuit and throwing said brake into action.

I 6; In a combined typewriting and computing machine, comprising numeralkeys and indexing devices set thereby, dial wheels, a general operatorfor turning said wheels concomitantly to points determined by the setindexing devices, and a letterfeeding carriage, the combination with anelectrical motor or prime mover connected to said general operator andincluded in an open circuit, of means dependent upon the movement of thetypewriter carriage for closing said circuit, a brake for said motor, asolenoid or magnet to operate said brake and included in a normally opencircuit, and means dependent upon the movement of said general operatorfor opening said motor circuit and closing said solenoid circuit.

7. In a combined typewriting and computing machine, comprising numeralkeys and indexing devices set thereby, dial wheels, ageneral operatorfor turning said wheels concomitantly to points determined by the setindexing devices, and a letterfeeding carriage, the combination with anelectrical motor or prime mover connected to said general operator andincluded in an open circuit, of means dependent upon the movement of thetypewriter carriage for closing said circuit, a brake for said motor, asolenoid or magnet to operate said brake and included in a normally opencircuit, means dependent upon the movement of said general operator foropening said motor circuit and closing said solenoid circuit, and meansfor automatically opening said solenoid circuit. 7

8. In a combined typewriting and computing machine, comprising numeralkeys and indexing devices set thereby, dial wheels, a general operatorfor turning said wheels concomitantly to points determined by the setindexing devices, and a letterfeeding carriage, the combination with anelectrical motor or prime mover connected to said general operator andincluded in an open circuit, of means dependent upon the movement of thetypewriter carriage for closing said circuit, a brake for said motor, asolenoid or magnet to operate said brake and included in a normally opencircuit, means dependent upon the movement of said general operator foropening said motor circuit and closing said solenoid circuit, and meansfor automatically opening said solenoid circuit, the last mentionedmeans including a cam operated by the core of the solenoid.

9. In a combined typewriting and computing machine, comprising numeralkeys and indexing devices set thereby, dial wheels, a general operatorfor turning said wheels concomitantly to points determined by the setindexing devices, and a letterfeeding carriage, thecombination with anelectrical motor or prime mover connected to said general operator andincluded in an open circuit, of means dependent upon the movement of thetypewriter carriage for closing said circuit, a brake for said motor, asolenoid or magnet to operate said brake and included in a normally opencircuit,

means dependent upon the movement of said general operator for openingsaid mo tor circuit and closing said solenoid circuit, and means forautomatically opening said solenoid circuit, the last mentioned meansincluding a cam operated by the core of the solenoid and operating toopen a switch in the solenoid circuit, a yielding construction beingprovided between the brake and the I solenoid core, to permit movementof the core after the brake is set.

10. In a combined typewriting and computing machine, comprising numeralkeys and indexing devices set thereby, dial wheels, a general operatorfor turning said wheels concomitantly to points determined by the setindexing devices, and a letter-feeding carriage,the combination with anelectrical motor or prime mover connected to said general operator andincluded in an open circuit, of means dependent upon the movement of thetypewriter carriage for closing said circuit, a brake for. said motor, asolenoid or magnet to operate saidbrake and in 'cluded in a normallyopen circuit, means dopendent upon the movement of said general operatorfor opening said motor circuit and closing said solenoid circuit, meansfor automatically opening said solenoid circuit, the last mentionedmeans including a cam operated by the core of the solenoid, and ayielding device, as 9-1, to complete the opening of the solenoidcircuit.

11. In a combined typewriting and computing machine, comprising numeralkeys and indexing devices set thereby, dial wheels, a general operatorfor turning said wheels concomitantly to points determined by the setindexing devices, and a letter-feeding carriage, the combination with anelectrical motor or prime mover connected to said general operator andincluded in an open cirmeans for automatically opening said solea noidcircuit, the last mentioned means including a cam operated by the coreof the solenoid, and operating'to open said switch and a yielding detentor device to complete the opening of the solenoid circuit.

12. In a computing machine, the combination with a system of settabledevices on which a number may be set up, of a series of registeringdevices into which numbers so set up may be carried, a general operatorfor operating all the registering devices concomitantly to so carry thenumbers, a normally silent electrical prime mover for actuating saidgeneral operator, automatic means dependent upon the setting of thesettable devices for computing the last digit in a number, for incitingsaid prime mover to action, and means for independently maintaining saidprime mover inaction and for bringing it to rest.

13. In a computing machine, the combination with a system of settabledevices on which a number may be set up, a series of registering devicesinto which numbers so set up may be carried, a general operator foroperating all the registering devices concomitantly to so carry thenumbers, and a letter-feeding denomination-controlling carriage, of anormally silent prime mover for actuating said general operator, meanscalled into action by the carriage movement in letter-feeding directionpast a predetermined point, for inciting said prime mover to action, andfor releasing the prime mover from the control of the carriage, meansfor maintaining the prime mover in action after the control of thecarriage ceases, and

means for depriving the prime mover of motive power.

143. In a computing machine, the combination, with a system of settabledevices on which a number may be set up, a series of registering devicesinto which numbers so set up may be carried, a general operator foroperating all the registering devices concomitantly, to so carry thenumbers, a normally silent prime mover positively connected to operatesaid general operator while active, and means for inciting said primemover to action; of an automatic brake for bringing said prime mover torest when said general operator has completed a cycle of movements.

15. In a computing machine, the combination with a system of settabledevices on which a number may be set up, a series or registering devicesinto. which numbers so set up may be carried, a general operator foroperating all the registering devices can comitantly to so carry thenumbers, and a normally silent prime mover for actuating said generaloperator, of automatic means for incitin said prime mover to action whenthe last digit of a number has been set up on said settable devices, formaintaining the prime mover in action independently, and

for bringing it to rest, and means for rendera ing said automaticinciting means incapable of action.

16. In a computing machine, the combination with a system of indexingdevices on which numbers may be set up,- a series of registering devicesinto which numbers so set up may be carried, and a general operator foroperating all the registering devices concomitantly to so carry thenumbers, of a normally stationary electric motor for actuating saidgeneral operator, a normallyopen circuit wherein said motor is included,automatic means for closing said circuit immediately upon the last digitof a number being set up on said indexing devices, and means forthereafter holding said circuit closed.

17. In a computing machine, the combination with a system of indexingdevices on which numbers may be set up, a series of registering devicesinto which numbers so set up may be carried, and a general operator foroperating all the registering devices concomitantly to so carry thenumbers, of a normally-stationary electric motor for actuating saidgeneral operator, a normallyopen circuit wherein said motor is included,automatic means for closing said circuit immediately upon the last digitof a number being set up on said indexing devices, means for thereafterholding said circuit closed, and automatic means for opening saidcircuit when said general operator has completed a cycle of operations.

18, In a computing machine, the combination with a system of settabledevices onwhich a number may be set up, a series ofv registering devicesinto which numbers so setup may be carried, and a general operator foroperating all the registering devices concomitantly to so carry thenumbers, of a prnne mover for actuating sa d general operator,an'automatic brake for stopping said prime mover, and means forrelieving said wheels concomitantly to points determined 7 by the setindexing .devices, and a letter-.teeding carriage, the combination withan electria cal motor or prime mover connected to said general operatorand included in an open circuit, of means dependent upon a letterfeedmgmovement of the typewriter carriage for closing said circuit; meansbeing prov1ded for releasing said ClICHltflOlTl the control of saidcarriage prior to the completion of sald movement, to prevent repeatedo'perat1on of said general opera tor.

In a combined type/writing and con puting mach ne, comprisingtype-operating numeral keys and indexing devices set thereby, .atypewriter carriage, letter-feeding mechanism for said carriage, saidmechanism controlled by said keys, dial wheels, and a general operatorfor advancing said wheels to points determined by the set in dexingdevices, the combination with it normally open electrical circuit, anormally stationary electrical prime mover included in said circuit foractuating said general op,-

erator and a circuit-closing switch, of means dependent up on theletter-feeding movement of the typewriter carriage beyond the unitsplace in a computation, for operating said switch to close said circuit,and means independent of said carriage for thereafter holding the.switch in operated position.

21. In a combined typewriting and com-, puting machine, comprisingnumeral keys and indexing devices set thereby,dial wheels, a generaloperator for turning said wheels concomitantly to points determined bythe set indexing devices, and a lettenfeeding carriage, the combinationwith an electrical motor or prime mover connected to, said generaloperator and included in an open circuit, of means dependent upon themovement of the typewriter carriage for closing said circuit, meansindependent of said carrlage for hold ng the circuit closed, and

-means for automatically breaking said cir-.

a general operator for turning said wheels concomitantly to pointsdetermined by the.

' circuit at the conclusion of the cycle of the general operator.

28. In a combined. typewriting and computing machine, comprising numeralkeys and indexing devices set thereby, dials, a

general operator for turning said dials concomitantly to pointsdetermined by the set indexing devices, and a letter-feeding carriage,the combination with an electrical 'motor connected to said generaloperator, of a motor starter normally in ineffective position, a dog ortappet on said carriage to operate said starter, means for retainingsaid starter in operated position to maintain the motor in operation,and means'for releasing said starter from said retaining means upon thecompletion of the cycle of operations ofthe general operator to causethe motor to become inactive.

24. In a combined typewriting and comindexing devices set thereby,registering devices, a general operator for advancing all theregistering devices concomitantly to points determined by the setindexing devices, and a letter-feeding carriage, the

combination with an electric motor connected to said general operator,of a motor starter normally in ineifective position, a dog or tappet onsaid carriage to-move said a starter into effective position, meansindependent of said dog or tappet for retaining said starter ineffective position, means for releasing said starter from said retainingmeans upon the completion of a cycle of operations of the generaloperator, and means independent of said releasingmeans and said dog ortappet forreturning said starter to normal position after having beenreleased. i

25. In a combined typewriting and computing machine, comprising indexingde- Vices on which numbers may be set up, registering devices, and ageneral operator for advancing said registering devices to pointsdetermined by the set indexing devices, the combination of an electriccircuit normally open and including a normally-stationary prime moverfor actuating said general operator, means dependent upon the letterfeeding movement of the carriage for closing said circuit, meansindependent of the carriage for holding the circuit closed, and .meansdirectly connected to said general operator for subsequently openingsaid circuit.

26. In a computing machine, the combination with a series of settabledevices on which numbers may be set up, a series of registering devicesinto which the numbers so set up may be carried, and a general operatorfor operating all the registering devices concomitantly to so carry thenumbers, of a normally-inactive electric motor for actuating saidgeneral operator, a circuit wherein said motor is included, a circuit-closing switch, automatic means for operating said switchimmediately upon the last digit of a numberbeing set up on said settabledevices, and retaining means engageable by said switch for positivelyholding the same in circuit-closing position.

27. In a computing machine, the combina tion with a series of settabledevices on which numbers may be set up, a series of registering devicesinto which numbers so set up may be carried, and a general operator foroperating all the registering de vices concomitantly to so carry thenumbers, of a normally-inactive electric motor for actuating saidgeneral operator, a circuit wherein said motor is included, a circuit- Isaid switch into position to close said circuit immediately upon thelast digit of a number being set up on said settable devices, retainingmeans for positively holding'said switch in circuit-closing position,and automatic means for releasing said switch from said retaining meanswhen said general operator has completed a cycle of operations. 28. In acomputing machine, the combination with a series of settable devices onwhich numbers may be set up, a series of registering devices into whichthe numbers so set up may be carried, and a general operator foroperating all the registering devices concomitantly to so carry thenumbers, of a normally-inactive electric motor for actuating saidgeneral. operator, a circuit wherein said motor is included, a resilientswitch, auton'iatic means for moving said switch into position to closesaid circuit upon'the lastdigit of a number being set up on saidsettable devices, and means frictionally engaged by said switch when somoved, whereby said circuit is held closed. 29. In a computing machine,the combination with a series of settable devices on which numbers maybe set up, a series of registering devicesinto which numbers so set upmay be carried, and a general. operator for operating all theregistering devices concomitantly to so carry the numbers, of anormally-inactive electric motor for actuating said general operator, acircuit wherein said motor is included, a resilient switch, automaticmeans for moving said switch into position to close said circuit uponthe last digit of a number being set up on said settable devices, meansfrictionally engaged by said switch when so moved, whereby said circuitis held closed, and automatic means for releasing said switch from suchengagement when the general operator has completed a cycle ofoperations.

30. In a computing machine, comprising indexing devices on which numbersmay be set up, registering devices into which numbers so set up may becarried, and a general operator for operating all the registeringdevices concomitantly to so carry the numbers, the combination with anormally-silent electric motor for actuating said general operator, anda normally-open circuit wherein said motor is included, of automaticmeans dependent upon the setting up of the last digit of a number forclosing said circuit, a brake for said motor, and means dependent uponthe movement of said general operator for opening said circuit andactuating said brake.

31. In a computing machine, comprising indexing devices on which numbersmay be set up, registering devices into which the numbers so set up maybe carried, and a general operator for operating all the registeringdevices concomitantly to so carry the numbers, the combination with anelectric motor for actuating said general operator. a circuit whereinsaid motor is included, and a switch in said circuit, of automatic meansdependent upon the setting up of the last digit of a number for movingsaid switch actuating said general operator, :1 circuit wherein saidmotor is included, and a switch in said circuit, of automatic meansdependent upon the setting up of the last digit of a number for movingsaid switch into position to close said circuit, a lever for moving saidswitch into position to open said circuit, and a lever engageable bysaid general operator when the latter has approximately completed acycle of operations, for actuating the first-named lever.

33. In a computing machine, comprising indexing devices on which numbersmay be set up, registering devices into which the numbers so set up maybe carried, and a general operator for operating all the registeringdevices concomitantly to so carry the numbers, the combination with anormallysilent electric motor for actuating said general operator, acircuit wherein said motor is included, and a controlling switch in saidcircuit, of a rocker having an arm adapted to engage and operate saidswitch to close said circuit, a key for operating said rocker, and meansunder the control of the general operator to automatically engage andoperate said switch to open said circuit.

34. In a computing machine, comprising indexing devices on which numbersmay be set up, registering devices into which the numbers so set upmaybe carried, and a I general operator for operating allthe-registering devices concomitantly to so carry the numbers, thecombination with a normallysilent electric motor for actuating said general operator, a circuit wherein said motor is included, and acontrolling switch in said circuit, of a rocker having apair of arms oneof which is adapted to engage sai switch and move the same into positionto close said circuit when said rocker is operated, a manually-operated,depressible mem ber extending across the other arm to operate saidrocker when depressed, and means under the control of the generaloperator to automatically engage and operate said switch to open saidcircuit.

J. FRANK ALLARD. IVitnesses:

K. FRANKFORT, C. RIPLEY.

Copies of this patent may be obtained 101' five cents each, byaddressing the Commissioner of Patents, Washington, D. O.

